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  • Electronic Resource  (2)
  • 2005-2009
  • 1995-1999  (2)
  • 1998  (2)
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  • Electronic Resource  (2)
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  • 2005-2009
  • 1995-1999  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Haemodynamic Evaluation of Cerebral Gliomas Using XeCT (1998)
    Springer
    Acta neurochirurgica 140 (1998), S. 223-234 
    Details
    ISSN: 0942-0940
    Keywords: Keywords: Cerebral blood flow; XeCT; low grade glioma; high grade glioma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The purpose of this study was to characterize regional blood flow (BF) in untreated cerebral gliomas (CG) using stable Xe-enhanced computed tomography (XeCT). XeCT of 38 patients with untreated CG were analyzed and compared with CT and magnetic resonance images (MRI) and histopathological findings. Individual averaged BF values for tumour in 29 high grade gliomas (HGGs) and 9 low grade gliomas (LGGs) were intermediate between averaged BF values for cortex and white matter in the non-tumour bearing hemisphere. All averaged BF values for cyst and central necrosis were very low. In 27 HGGs, BF in tumour was relatively high in ring-enhancement lesions on CT and MRI, but was low even in viable tumour centers showing no contrast enhancement. In the other 2 HGGs, BF was low in tumour center and relatively high in tumour periphery regardless of homogeneous enhancement. In 5 HGGs, averaged BF value of the cortex outside surrounding oedema was higher than that of cortex in the non-tumour bearing hemisphere. In LGGs, BF distribution in tumour was homogeneously low in 3 small-sized and heterogeneous in 6 large-sized lesions including moderately high and low BF regions. These differences in BF pattern between HGGs and LGGs on XeCT might be helpful in considering to some extent the histopathology of untreated cerebral glioma pre-operatively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007010050089
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Dye-coupling of melanocytes with endothelial cells and pericytes in the cochlea of gerbils (1998)
    Springer
    Cell & tissue research 293 (1998), S. 271-275 
    Details
    ISSN: 1432-0878
    Keywords: Key words Stria vascularis ; Intermediate cell ; Lucifer yellow ; Microinjection ; Gap junction ; Gerbil
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract  Intercellular connections via gap junctions in the stria vascularis, which constitutes the lateral wall of the cochlear duct, were investigated by the Lucifer yellow microinjection method with the aid of a confocal laser microscope. The dye injected into an intermediate cell (melanocyte) diffused into capillary endothelial cells and pericytes as well as other intermediate cells, basal cells, and fibrocytes in the spiral ligament; whereas the dye injected into a marginal cell (epithelial cell) was confined to the injected cell. The observation of dye-coupling between intermediate cells and endothelial cells and pericytes makes likely the possibility that these cells work together to play a role in the specific function of the stria vascularis (i.e., production of the positive endocochlear potential and the endolymph) and adds endothelial cells and pericytes to the current “two-cell model” of the stria vascularis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004410051118
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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